:root {
  color-scheme: dark;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "Noto Sans CJK SC",
    "PingFang SC",
    "Microsoft YaHei",
    sans-serif;

  background: #02050d;
  color: rgba(244, 247, 255, 0.94);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-width: 100%;
  min-height: 100%;
  background: #02050d;
}

html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  position: relative;
  background:
    radial-gradient(circle at 50% 45%, rgba(32, 72, 158, 0.10), rgba(2, 5, 13, 0) 36%),
    radial-gradient(circle at 20% 18%, rgba(66, 125, 255, 0.08), rgba(2, 5, 13, 0) 28%),
    radial-gradient(circle at 80% 25%, rgba(50, 96, 214, 0.06), rgba(2, 5, 13, 0) 30%),
    radial-gradient(circle at 50% 85%, rgba(12, 22, 48, 0.30), rgba(2, 5, 13, 0) 45%),
    linear-gradient(180deg, #030816 0%, #02050d 55%, #010309 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 50%, rgba(120, 180, 255, 0.035), transparent 55%),
    radial-gradient(circle at 15% 75%, rgba(90, 140, 255, 0.025), transparent 35%),
    radial-gradient(circle at 80% 20%, rgba(90, 140, 255, 0.02), transparent 28%);
  opacity: 0;
  transition: opacity 5s ease;
}

body.ready::before {
  opacity: 1;
}

button {
  font: inherit;
}

#sky {
  position: fixed;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 4.5s ease;
}

body.ready #sky {
  opacity: 1;
}

.scene {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 2rem;
  pointer-events: none;
}

.words {
  text-align: center;
  transform: translateY(-1vh);
  opacity: 0;
  transition:
    opacity 4s ease 1.2s,
    transform 5s ease 1.2s;
}

body.ready .words {
  opacity: 1;
  transform: translateY(0);
}

h1 {
  margin: 0;
  font-size: clamp(3.4rem, 11vw, 7.5rem);
  font-weight: 200;
  letter-spacing: 0.18em;
  text-indent: 0.18em;
  color: rgba(246, 249, 255, 0.88);
  text-shadow:
    0 0 18px rgba(160, 196, 255, 0.18),
    0 0 40px rgba(110, 160, 255, 0.10),
    0 0 90px rgba(88, 142, 255, 0.07);
}

.words p {
  margin: 1.2rem 0 0;
  font-size: clamp(0.78rem, 1.8vw, 0.96rem);
  font-weight: 300;
  letter-spacing: 0.30em;
  text-indent: 0.30em;
  color: rgba(226, 236, 255, 0.48);
  text-shadow: 0 0 20px rgba(110, 160, 255, 0.08);
}

footer {
  position: fixed;
  z-index: 2;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  justify-content: center;
  padding:
    1.25rem
    1.25rem
    max(1.25rem, env(safe-area-inset-bottom));
  pointer-events: none;
}

[data-contact] {
  appearance: none;
  border: 0;
  padding: 0.65rem 0.85rem;
  background: transparent;
  color: rgba(235, 240, 255, 0.24);
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  cursor: pointer;
  pointer-events: auto;
  transition:
    color 600ms ease,
    opacity 600ms ease,
    text-shadow 600ms ease;
}

[data-contact]:hover {
  color: rgba(235, 240, 255, 0.72);
  text-shadow: 0 0 20px rgba(120, 170, 255, 0.16);
}

[data-contact]:focus-visible {
  outline: 1px solid rgba(235, 240, 255, 0.42);
  outline-offset: 0.25rem;
  color: rgba(235, 240, 255, 0.82);
}

.noscript {
  position: fixed;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  background: #02050d;
}

.noscript p:first-child {
  margin: 0;
  font-size: 4rem;
}

.noscript p:last-child {
  opacity: 0.45;
  letter-spacing: 0.2em;
}

@media (prefers-reduced-motion: reduce) {
  #sky,
  .words,
  body::before {
    transition-duration: 0.01ms;
    transition-delay: 0ms;
  }
}